Valve.



- w; C. MARSH.

- VALVE.`

` APPLICATION FILED OCT. 9,1916.

Patented Apr. 17, 1917'.`

w'ILLIAi/t o MA'nsm-or ERIE, PENNSYLVANIA, AssIGNon rro MAnsH VALVE ooMIANY,

OF ERIE, PENNSYLVANIA, A QORPORATION OF NEW YORK. l

l Specieatio'rigf Letters Ratent.

. ratenteaApr-1'7, 191e.

continuation in. part ofnppuefation serial No. 89,775, mea April s, A191e.` This nppnenuqn nien october 9, f 1916. seria1No.124,56o.' t

To all whom/'it mag/concern: u

Be it known that I, WILLIAM'G.' vMARSH, a citizenof the'United States, residing at Erie, in the county'of Erie' and State of Pennsylvania, have invented certain new and useful Improvements' in Valves, vof which the following is a'sp'eoication."

My invention relates to valves, and has for its object to provide means for Vsealing the valve stem in all positions of the valve. My invention is adapted particularly for use invconnection with that type of valve now known as modulated yalves, and thepresent case'is in part a continuation of an application for Lettersflatent filed by me April 8, 1916, Serial No. 89,775',

AIn the accompanying drawing Figure 1 1s Va central "vertical sectional view of a modulated valveembodying my improved construction..

Fig. 2' is 'a detail elevation of'thevalve stem. v v

Fig..3 is'a detail horizontal sectional view of the valvestem and the valve carrier.

' Similarnumeralsof reference denote corresponding parts in the several views.'

In the said drawing, the j reference nu-4 meral-1 denotes the body ofthe valve, thev same having the interiorly threaded inlet aperture 2for the receptionl of thel supplypipe, and the discharge 3, to which mayl beconnected, by a union nut 4, a short threaded pipe section or nipple 5, for connection with the radiator.v The upper side of the body 1 ,is apertured'and eXteriorly screw-threaded at`6 to receive a union nut 7 engaging with.

a bonnet piece 8, which projects into the interior of the body l, as shown, said body and bonnet piece forming the valve casing.

This bonnet. piece 8` is interiorlyv screw threaded at its lower end to receive the screw threaded exterior surface -of a valve carrier9, the-latter adapted to be adjusted vertically in said bonnetl piece. The. upper Q end of said valve carrler is centrally apertured at 10 and is formed with diametrically opposed vertical slots 11 registering with said central aperture, vsaid vaperture and slots being Vadapted to receive thelower end of a valve stein' 12, said lower end being-provided with oppositely disposed'fins 13, adapted to fit-said aperture 10 and slots 11 in the valve carrier 9. y f

The valve' stem 12 a little above the fins 13 isl provided. with' acone 14 adapted to seat upona similar conev surface 15 in the bonnet piece, though said co'nes are of slightly unequal degrees, therebyl giving a pointed 'bearing effecting a'perfect seal between the two, as readily will be understood. ,'.Resting upon the upperlat surface of thecone 14 1s a'packing 16 upo'n which' in turn 'rests'A a packing ring -17and` above said packing rin 1s disposed a comparatively heavyfcoile, spr1ng`18, all for a purpose'hereinafter to .be described. Thefeirterior surface'jlof the bonnet piece surrounding said ,packing and springis screw' threaded to vreceive at its top4 a cap 19, against which "the upper endl of thespring 18 bears, and'through which the tensionl of said spring may be applied.

exterior of the bonnet piece 8 a flanged ring .20, adapted to rest on a ange lformed yO11 the bonnet piecel 8 above the union nut 7',

Below said cap 19 there is, also fittedontl'e f l said ring being retained in fixed position by ascrew 21 as shown'. Said ring is formed on 'f portion ofthe ring 20 is a cap 'piece 22l1av-` ing attached thereto a handle 23 .and being retained inplaee by means of a nut'24: en-l gaging the upper end of the valve stem 12, said valve stem being formed angularat 25 to engage a similarv angled aperturein said cap piece 22, whereby a rotation of said cap piece will be impartedto said valvestem.

Formed integral with said cap piece on one side thereof is a pointer 26, .which is adapted to indicate upon the ring 2O the' position of the valve." v

`The valve carrier 9 at its lower end has swiveled thereon a valve piece27, whichis provided on its undersurface with an annular packing ring A28, and is formed with a central downward screw-threaded projec-- tion( 29, adapted removablyv to receive a nut 30 provided witha lower coned surface 31a 1 the same forming a closure member, adap to t snuglyinto the valve seat 32 when the l valve is closed. In Fig. 1 the valve is shown `in semi-open position, but when closed it is intended that .the packing 28 shall .rest and press upon the upper face of the valve seat 32, .it being understood that the nut 30 when then loosening the union screwed to position upon the projection `29 operates to retain the annular packing 28 1n position.

15 in the bonnet piece S, and by varying the relative pitch of said cone and cone seat slightly, as for instance, about one-fourth of a degree, I provide an annular bearing point which effects a perfect seal, this bearing being maintained by the pressure of the spring 1S. But in the event of injury or wear to this seal, I provide the packing 16 on top thereof, which is also maintained in place by the spring 1S, and acts automatically to reinforce the packless seal, which construction may properly be termed a reinforced packless seal. It will also be observed that the packing 16 in its stuffing box chamber instead of resting upon the bottom wall in said chamber rests upon the upper face of the coned portion of the valve stem 12, and in that way through the packing ring 17 and spring 18` will exert a direct downward pressure upon the valve stem, thereby tending to force the coned surface 14 thereon against its seat l5 in the bonnet piece 8 and also serving, should the contact between said cone and its seat be defective, to prevent leakage.

- The valve handle 23 may be disposed in any' desired position by closing the valve, nut 7, and turnino the bonnet piece 8 and the parts carrie thereby until the handle is in the desired position. The bonnet piece may then be locked in this position by screwing down the union nut 7, and the indicating ring 20 should be turned so that the closed posltion indicated thereon will register with the pointer 26, the same being locked in position through the screw 21.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is 1- 1. A valve, comprising a casing, a valve seat therein, a valve for' said scat, a rotary valve stem for operating said valve, a pack.- less seal in said casing for said valve stem, a packing in said casing reinforcing said packless seal, and resilient means for exerting pressure on said packing.

2. A valve, comprising a casing, a valve seat therein, a valve for said seat, a rotary valve stemfor operating said valve, coperating surfaces between said valve stem and casing forming a packless seal, a packing in said casing resting upon said packless seal, and resilient means for exerting pressure upon said packing.

3. A valve, comprising a casing, a valve seat therein, a valve for said seat, a rotary valve stem for operating said valve, complementary cones of unequal degrees in said casing and on said valve stem forming a packless seal, a packing in said casing resting upon an integral part of said valve stem and forming an auxiliary seal reinforcing said packless seal, and a spring for forcing 'said packing in sealing position and through said packing also maintaining said cones in sealing relation.

4. A valve, comprising a casing, a valve seat therein, a. valve for valve stem for operating said valve, complementary cones of unequal degrees in said casing and on said valve stem forming a packless seal, a packing in said casing resting upon an integ'ral part of said valve stem and forming an auxiliary seal reinforcing said packless seal, a spring exerting its tension on said packing, and a. screw cap for retaining said spring in position.

In testimony whereof I hereunto set my hand this 2nd day of October, 1916.

WM. C. MARSH.

said seat, a rotary p 

